GDI Pressure Sensor
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- เผยแพร่เมื่อ 29 ส.ค. 2024
- GDI Fuel Pressure Sensor
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Modern GDI or gasoline direct injection engines need various components to give the ECM some feedback on engine crankshaft and cam position and rate of change. The ECM also needs a very important value in addition to many other inferred parameters, it needs a fuel pressure value and gets this parameter from the fuel pressure sensor. With GDI the older fuel pressure sensor is a totally different device construction. It has to withstand about 2900 PSI of pressure or even more upon peak values.
As a rule, GDI fuel rails are much stronger and thicker in construction. Another difference in GDI as opposed to PFI is that on GDI upon cranking the engine, there has to be a rapid high fuel pressure rise. The engine will not start until there's enough fuel pressure in the high pressure fuel rail system. This means that the fuel pump's check valve and pump itself has to be at it's optimum at all times. Residual high pressure leaks also have to be minimized. During all this mayhem, it is the fuel pressure sensor the one in charge of keeping track of it all.
It is important to know that on GDI, the injection event can occur at either intake, or during compression. This mode of operation will .... Get the whole story right here in this video...Enjoy...
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Yes, we'll be doing a few videos in this series about that. The issue is that the PCV vapors accumulate in the intake and get dislodged. But makers are doing specifics that will eliminate that. Vapor lock, as you see here is also an issue. Mitsubishi suffers from premature HP pump failures due to vapor in the pump. It's just how careful makers are before leasing the design. There's probably a re-flash to the Mitsus to allow for fuel pump priming with engine OFF. Thanks for posting.
Very interesting! Getting 'up to speed' & comfortable with GDI systems is on my short list of things to do.
Thank you, as you might have seen on our website, we do have the experience making equipment. But, there are ways that folks can make their own stuff with what's available out there, ready-made circuits. We'll cover injector pulsers, fuel rail pressure transducer for scopes and Graphing meter, how to make your own scanner, oscilloscope, solenoid pulser, duty-cycle controller and many other gadgets at a fraction of a their cost. The applicable software is be made available if needed. Coming soon.
M274 remove fuel injector
Many automakers are going to an extra low pressure injector or two to clean the intake valves. The intake valve deposits are a major problem because it can really interfere will the air intake swirl and great reduce mileage which is not the greatest to begin with. The other major problem that is occurring is that the used oil analysis are commonly showing lots of fuel contamination requiring much more frequent oil changes (3-4k mile range).
Interesting series.
I've heard GDI engines are prone to excessive intake valve deposits. Port injection tends to 'wash' PCV spooge off the back of intake valves, but with GDI, it just bakes on and builds up.
In my opinion GDI sounds overly complex, and I suspect engines so equipped will have relatively short, expensive lifespans.
Here's our latest equipment tool:
www.autodiagnosticsandpublishing.com/Injector_Pulser_Tool.html
We also just released another tool here.... www.autodiagnosticsandpublishing.com/ignition_coil_pulser_tester.html
ADPTraining is this the common cause to failure to the fuel pressure regulator
ADPTraining i'm having a very bad stalling problem and the car wont start after a certain amount of time.i believe my high pressure fuel pump its on its last leg.can it just be the fuel pressure sensor that is culprit?this car has been a nighmare recently.vw passat 2006 2.0t 108k miles
To little info to go on. Post back with more if possible.
Hahaha, i like to have a laugh, but i really enjoy your videos, and i dont really mind who narrates. Really looking forward to the next series, what type of equipment are we talking about here, test rigs and diagnostic aids ? Any way, keep them coming, and have a good week end :-)
We're here to help you guys. Anytime you get on the market for a tool let us know. We make equipment but I don't like to advertise my stuff here. Go to my site. It may or may not be what you're looking for. The important thing is that you should get as much advise as you can before you buy. Good luck.
LOL... I love your posts man, really. Yes, some folks like the girl and some like Steven... So I try to please. Thanks for posting as always. We'll be wrapping up this series in about a month or so. Then next we'll do the "Make Your Own Equipment" series, which will cover tons of gadgets useful to everyone. Take care...
Will you please help with my grandis engine pdoblems regarding coil #1 and #4 got no contact. Pls help
any way once im going to buy my tools i will tell you what i found here and ask for your advice, thanks.
dont tell me, stephen is off drinking beer tonight ,so fonda gets the gig?
GDI MEAN brother I dont know
We're here to help you guys. Anytime you get on the market for a tool let us know. We make equipment but I don't like to advertise my stuff here. Go to my site. It may or may not be what you're looking for. The important thing is that you should get as much advise as you can before you buy. Good luck.
We're here to help you guys. Anytime you get on the market for a tool let us know. We make equipment but I don't like to advertise my stuff here. Go to my site. It may or may not be what you're looking for. The important thing is that you should get as much advise as you can before you buy. Good luck.
We're here to help you guys. Anytime you get on the market for a tool let us know. We make equipment but I don't like to advertise my stuff here. Go to my site. It may or may not be what you're looking for. The important thing is that you should get as much advise as you can before you buy. Good luck.
hi, i run GDI 6G74 engine whenever i drive over 200 kms the check engine pops up then accelerator wouldn't pick, and also comes up when i drive up hill, i checked on machine but errors, kindly advice